Remove expired ports:
2011-02-20 devel/root: Port does not build on supported versions of FreeBSD
2011-02-20 net/ztelnet: unfetchable / Does not compile with GCC 4.2
2011-02-20 print/kaspaliste: Does not compile with GCC 4.2
2011-02-20 sysutils/perf: Does not build on supported versions of FreeBSD